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IntroductionRaise boring machines are among the key pieces of equipment used for mining in underground mines. As the core component of the machine, the drill pipe is subjected to significant pressure and friction, and is frequently eroded by dust and water during operation. The failure of drill pipe

Jiangyin Eternal Heavy Industry Co.,Ltd was established in 2008, it is National high-tech enterprise, innovative small and medium-sized enterprise. Till now our main products including all kinds of special steel forgings and heavy duty hydraulic cylinder. Our special steel forgings include all kinds

Jiangyin Eternal Heavy Industry Co.,Ltd was established in 2008, it is National high-tech enterprise, innovative small and medium-sized enterprise. Till now our main products including all kinds of special steel forgings and heavy duty hydraulic cylinder. Our special steel forgings include all kinds

Jiangyin Eternal Heavy Industry Co.,Ltd was established in 2008, it is National high-tech enterprise, innovative small and medium-sized enterprise. Till now our main products including all kinds of special steel forgings and heavy duty hydraulic cylinder. Our special steel forgings include all kinds